A function machine with two operations, and options to hide or reveal numbers and set all operations and numbers. A notepad is available for recording inputs and outputs, and a loop function takes the...More: lessons, discussions, ratings, reviews,...

Classroom activity (also called the Masonry Problem; a variation on polyominoes) to be explored through manipulatives (dominoes). Students explore different possibilities of making brick walls with an...More: lessons, discussions, ratings, reviews,...

Student page for the classroom activity (also called the Masonry Problem; a variation on polyominoes) to be explored through manipulatives (dominoes). Students explore different possibilities of makin...More: lessons, discussions, ratings, reviews,...

A classroom activity (similar to Pentomino + 1 = Hexomino; a variation on polyominoes) to be explored through manipulatives (paper dominoes). Students explore whether it is possible to cover a 6x5 gri...More: lessons, discussions, ratings, reviews,...

Student page for the classroom activity (similar to Pentomino + 1 = Hexomino; a variation on polyominoes) to be explored through manipulatives (paper dominoes). Students explore whether it is possible...More: lessons, discussions, ratings, reviews,...

Using this virtual manipulative you may: graph a function; trace a point along the graph; dynamically vary function parameters; change the range of values displayed in the graph; graph multiple functi...More: lessons, discussions, ratings, reviews,...

A classroom activity (also called 1000 Lockers) to be explored through the use of manipulatives and a ClarisWorks spreadsheet. Students then look for patterns and write the answer algebraically.More: lessons, discussions, ratings, reviews,...

Investigate the famous Locker problem. Invent your own version! This applet has a feature that allows students to investigate some of their own versions of the locker problem. For example, instead of ...More: lessons, discussions, ratings, reviews,...

A classroom activity (also called 1000 Lockers) to be explored through the use of manipulatives and a ClarisWorks spreadsheet. Students then look for patterns and write the answer algebraically.More: lessons, discussions, ratings, reviews,...

This sketch contains a collection of five different shapes: a star, square, circle, triangle, and diamond. The weight of these shapes can be compared by using the provided balance scale; simply drag o...More: lessons, discussions, ratings, reviews,...

This material is based upon work supported by the
National Science Foundation under Grant DUE-0226284.
Any opinions, findings, and conclusions or recommendations
expressed in this material are those of the author(s)
and do not necessarily reflect the views of the
National Science Foundation.